Susumu Yata
null+****@clear*****
Thu Jul 6 14:41:19 JST 2017
Susumu Yata 2017-07-06 14:41:19 +0900 (Thu, 06 Jul 2017) New Revision: 3e6280f11ef05947b33f94269695060b06cabe0d https://github.com/groonga/grnci/commit/3e6280f11ef05947b33f94269695060b06cabe0d Message: Remove an unused source file. Removed files: v2/info.go Deleted: v2/info.go (+0 -154) 100644 =================================================================== --- v2/info.go 2017-07-06 13:45:59 +0900 (8efeff8) +++ /dev/null @@ -1,154 +0,0 @@ -package grnci - -import ( - "fmt" - "reflect" - "strings" - "sync" - "time" -) - -const ( - // tagKey is the tag key for struct fields associated with Groonga columns. - tagKey = "grnci" - // tagSep is the separator in a struct field tag value. - tagSep = ';' -) - -var ( - structInfos = make(map[reflect.Type]*StructInfo) - structInfosMutex sync.RWMutex -) - -type StructFieldInfo struct { - Index int // Field position - Field *reflect.StructField // Field - Type reflect.Type // Field's underlying type - Tags []string // Field tag semicolon-separated values - ColumnName string // Column name - Dimension int // Vector dimension -} - -// newStructFieldInfo returns a StructFieldInfo. -func newStructFieldInfo(index int, field *reflect.StructField) (*StructFieldInfo, error) { - tagValue := field.Tag.Get(tagKey) - tags := strings.Split(tagValue, ";") - for _, tag := range tags { - tag = strings.TrimSpace(tag) - } - if strings.HasSuffix(tags[0], "*") { - return nil, NewError(InvalidType, map[string]interface{}{ - "tag": tagValue, - "error": "The first tag must not end with '*'.", - }) - } - typ := field.Type - dim := 0 - for { - if typ.Kind() == reflect.Ptr { - typ = typ.Elem() - } else if typ.Kind() == reflect.Slice { - typ = typ.Elem() - dim++ - } else { - break - } - } - switch reflect.Zero(typ).Interface().(type) { - case bool: - case int, int8, int16, int32, int64: - case uint, uint8, uint16, uint32, uint64: - case float32, float64: - case string: - case time.Time: - default: - return nil, NewError(InvalidType, map[string]interface{}{ - "type": typ.Name(), - "error": "The type is not supported.", - }) - } - return &StructFieldInfo{ - Index: index, - Field: field, - Tags: tags, - Type: field.Type, - ColumnName: tags[0], - Dimension: dim, - }, nil -} - -type StructInfo struct { - Type reflect.Type - Fields []*StructFieldInfo - FieldsByName map[string]*StructFieldInfo - FieldsByColumnName map[string]*StructFieldInfo -} - -// getStructInfo returns the StructInfo that represents typ. -func getStructInfo(typ reflect.Type) (*StructInfo, error) { - structInfosMutex.Lock() - defer structInfosMutex.Unlock() - if si, ok := structInfos[typ]; ok { - return si, nil - } - fis := make([]*StructFieldInfo, 0) - fisByName := make(map[string]*StructFieldInfo) - fisByColumnName := make(map[string]*StructFieldInfo) - for i := 0; i < typ.NumField(); i++ { - f := typ.Field(i) - if f.PkgPath != "" { // Skip unexported fields. - continue - } - tag := f.Tag.Get(tagKey) - if tag == "" || tag == "-" { // Skip untagged fields. - continue - } - fi, err := newStructFieldInfo(i, &f) - if err != nil { - return nil, err - } - fis = append(fis, fi) - fisByName[f.Name] = fi - if _, ok := fisByColumnName[fi.ColumnName]; ok { - return nil, NewError(InvalidType, map[string]interface{}{ - "columnName": fi.ColumnName, - "error": "The column name appears more than once.", - }) - } - fisByColumnName[fi.ColumnName] = fi - } - si := &StructInfo{ - Type: typ, - Fields: fis, - FieldsByName: fisByName, - FieldsByColumnName: fisByColumnName, - } - structInfos[typ] = si - return si, nil -} - -// GetStructInfo returns the StructInfo that represents the underlying struct of i. -// If i is nil or the underlying type is not a struct, GetStructInfo returns an error. -func GetStructInfo(v interface{}) (*StructInfo, error) { - if v == nil { - return nil, NewError(InvalidType, map[string]interface{}{ - "value": nil, - "error": "The value must not be nil.", - }) - } - typ := reflect.TypeOf(v) - for { - switch typ.Kind() { - case reflect.Ptr, reflect.Slice, reflect.Array: - typ = typ.Elem() - default: - if kind := typ.Kind(); kind != reflect.Struct { - return nil, NewError(InvalidType, map[string]interface{}{ - "kind": kind.String(), - "error": fmt.Sprintf("The kind must be %s.", reflect.Struct), - }) - } - return getStructInfo(typ) - } - } -} -------------- next part -------------- HTML����������������������������...Télécharger
